2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6 % RRRR EEEEE SSSSS OOO U U RRRR CCCC EEEEE %
7 % R R E SS O O U U R R C E %
8 % RRRR EEE SSS O O U U RRRR C EEE %
9 % R R E SS O O U U R R C E %
10 % R R EEEEE SSSSS OOO UUU R R CCCC EEEEE %
13 % Get/Set MagickCore Resources %
20 % Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
42 #include "magick/studio.h"
43 #include "magick/cache.h"
44 #include "magick/configure.h"
45 #include "magick/exception.h"
46 #include "magick/exception-private.h"
47 #include "magick/hashmap.h"
48 #include "magick/log.h"
49 #include "magick/image.h"
50 #include "magick/memory_.h"
51 #include "magick/option.h"
52 #include "magick/policy.h"
53 #include "magick/random_.h"
54 #include "magick/registry.h"
55 #include "magick/resource_.h"
56 #include "magick/semaphore.h"
57 #include "magick/signature-private.h"
58 #include "magick/string_.h"
59 #include "magick/string-private.h"
60 #include "magick/splay-tree.h"
61 #include "magick/thread-private.h"
62 #include "magick/token.h"
63 #include "magick/utility.h"
68 typedef struct _ResourceInfo
93 *random_info = (RandomInfo *) NULL;
100 MagickULLConstant(0),
101 MagickULLConstant(0),
102 MagickULLConstant(0),
103 MagickULLConstant(0),
104 MagickULLConstant(0),
105 MagickULLConstant(2048)*1024*1024,
106 MagickULLConstant(1536)*1024*1024,
107 MagickULLConstant(8192)*1024*1024,
108 MagickResourceInfinity,
109 MagickULLConstant(768),
110 MagickULLConstant(8),
111 MagickResourceInfinity
115 *resource_semaphore = (SemaphoreInfo *) NULL;
118 *temporary_resources = (SplayTreeInfo *) NULL;
121 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
125 % A c q u i r e M a g i c k R e s o u r c e %
129 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
131 % AcquireMagickResource() acquires resources of the specified type.
132 % MagickFalse is returned if the specified resource is exhausted otherwise
135 % The format of the AcquireMagickResource() method is:
137 % MagickBooleanType AcquireMagickResource(const ResourceType type,
138 % const MagickSizeType size)
140 % A description of each parameter follows:
142 % o type: the type of resource.
144 % o size: the number of bytes needed from for this resource.
147 MagickExport MagickBooleanType AcquireMagickResource(const ResourceType type,
148 const MagickSizeType size)
151 resource_current[MaxTextExtent],
152 resource_limit[MaxTextExtent],
153 resource_request[MaxTextExtent];
162 (void) FormatMagickSize(size,MagickFalse,resource_request);
163 if (resource_semaphore == (SemaphoreInfo *) NULL)
164 AcquireSemaphoreInfo(&resource_semaphore);
165 LockSemaphoreInfo(resource_semaphore);
170 resource_info.area=(MagickOffsetType) size;
171 limit=resource_info.area_limit;
172 status=(resource_info.area_limit == MagickResourceInfinity) ||
173 (size < limit) ? MagickTrue : MagickFalse;
174 (void) FormatMagickSize((MagickSizeType) resource_info.area,MagickFalse,
176 (void) FormatMagickSize(resource_info.area_limit,MagickFalse,
182 resource_info.memory+=size;
183 limit=resource_info.memory_limit;
184 status=(resource_info.memory_limit == MagickResourceInfinity) ||
185 ((MagickSizeType) resource_info.memory < limit) ?
186 MagickTrue : MagickFalse;
187 (void) FormatMagickSize((MagickSizeType) resource_info.memory,MagickTrue,
189 (void) FormatMagickSize(resource_info.memory_limit,MagickTrue,
195 resource_info.map+=size;
196 limit=resource_info.map_limit;
197 status=(resource_info.map_limit == MagickResourceInfinity) ||
198 ((MagickSizeType) resource_info.map < limit) ?
199 MagickTrue : MagickFalse;
200 (void) FormatMagickSize((MagickSizeType) resource_info.map,MagickTrue,
202 (void) FormatMagickSize(resource_info.map_limit,MagickTrue,
208 resource_info.disk+=size;
209 limit=resource_info.disk_limit;
210 status=(resource_info.disk_limit == MagickResourceInfinity) ||
211 ((MagickSizeType) resource_info.disk < limit) ?
212 MagickTrue : MagickFalse;
213 (void) FormatMagickSize((MagickSizeType) resource_info.disk,MagickFalse,
215 (void) FormatMagickSize(resource_info.disk_limit,MagickFalse,
221 resource_info.file+=size;
222 limit=resource_info.file_limit;
223 status=(resource_info.file_limit == MagickResourceInfinity) ||
224 ((MagickSizeType) resource_info.file < limit) ?
225 MagickTrue : MagickFalse;
226 (void) FormatMagickSize((MagickSizeType) resource_info.file,MagickFalse,
228 (void) FormatMagickSize((MagickSizeType) resource_info.file_limit,
229 MagickFalse,resource_limit);
234 resource_info.thread+=size;
235 limit=resource_info.thread_limit;
236 status=(resource_info.thread_limit == MagickResourceInfinity) ||
237 ((MagickSizeType) resource_info.thread < limit) ?
238 MagickTrue : MagickFalse;
239 (void) FormatMagickSize((MagickSizeType) resource_info.thread,MagickFalse,
241 (void) FormatMagickSize((MagickSizeType) resource_info.thread_limit,
242 MagickFalse,resource_limit);
247 resource_info.time+=size;
248 limit=resource_info.time_limit;
249 status=(resource_info.time_limit == MagickResourceInfinity) ||
250 ((MagickSizeType) resource_info.time < limit) ?
251 MagickTrue : MagickFalse;
252 (void) FormatMagickSize((MagickSizeType) resource_info.time,MagickFalse,
254 (void) FormatMagickSize((MagickSizeType) resource_info.time_limit,
255 MagickFalse,resource_limit);
261 UnlockSemaphoreInfo(resource_semaphore);
262 (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s: %sB/%sB/%sB",
263 MagickOptionToMnemonic(MagickResourceOptions,(ssize_t) type),
264 resource_request,resource_current,resource_limit);
269 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
273 + A s y n c h r o n o u s R e s o u r c e C o m p o n e n t T e r m i n u s %
277 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
279 % AsynchronousResourceComponentTerminus() destroys the resource environment.
280 % It differs from ResourceComponentTerminus() in that it can be called from a
281 % asynchronous signal handler.
283 % The format of the ResourceComponentTerminus() method is:
285 % ResourceComponentTerminus(void)
288 MagickExport void AsynchronousResourceComponentTerminus(void)
293 if (temporary_resources == (SplayTreeInfo *) NULL)
296 Remove any lingering temporary files.
298 ResetSplayTreeIterator(temporary_resources);
299 path=(const char *) GetNextKeyInSplayTree(temporary_resources);
300 while (path != (const char *) NULL)
303 path=(const char *) GetNextKeyInSplayTree(temporary_resources);
308 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
312 % A c q u i r e U n i q u e F i l e R e s o u r c e %
316 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
318 % AcquireUniqueFileResource() returns a unique file name, and returns a file
319 % descriptor for the file open for reading and writing.
321 % The format of the AcquireUniqueFileResource() method is:
323 % int AcquireUniqueFileResource(char *path)
325 % A description of each parameter follows:
327 % o path: Specifies a pointer to an array of characters. The unique path
328 % name is returned in this array.
332 static void *DestroyTemporaryResources(void *temporary_resource)
334 (void) remove((char *) temporary_resource);
335 temporary_resource=DestroyString((char *) temporary_resource);
336 return((void *) NULL);
339 static MagickBooleanType GetPathTemplate(char *path)
356 (void) CopyMagickString(path,"magick-XXXXXXXX",MaxTextExtent);
357 exception=AcquireExceptionInfo();
358 directory=(char *) GetImageRegistry(StringRegistryType,"temporary-path",
360 exception=DestroyExceptionInfo(exception);
361 if (directory == (char *) NULL)
362 directory=GetEnvironmentValue("MAGICK_TEMPORARY_PATH");
363 if (directory == (char *) NULL)
364 directory=GetEnvironmentValue("MAGICK_TMPDIR");
365 if (directory == (char *) NULL)
366 directory=GetPolicyValue("temporary-path");
367 if (directory == (char *) NULL)
368 directory=GetEnvironmentValue("TMPDIR");
369 #if defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__OS2__)
370 if (directory == (char *) NULL)
371 directory=GetEnvironmentValue("TMP");
372 if (directory == (char *) NULL)
373 directory=GetEnvironmentValue("TEMP");
376 if (directory == (char *) NULL)
377 directory=GetEnvironmentValue("MTMPDIR");
379 #if defined(P_tmpdir)
380 if (directory == (char *) NULL)
381 directory=ConstantString(P_tmpdir);
383 if (directory == (char *) NULL)
385 if (strlen(directory) > (MaxTextExtent-15))
387 directory=DestroyString(directory);
390 status=GetPathAttributes(directory,&attributes);
391 if ((status == MagickFalse) || !S_ISDIR(attributes.st_mode))
393 directory=DestroyString(directory);
396 if (directory[strlen(directory)-1] == *DirectorySeparator)
397 (void) FormatMagickString(path,MaxTextExtent,"%smagick-XXXXXXXX",directory);
399 (void) FormatMagickString(path,MaxTextExtent,"%s%smagick-XXXXXXXX",
400 directory,DirectorySeparator);
401 directory=DestroyString(directory);
402 if (*DirectorySeparator != '/')
403 for (p=path; *p != '\0'; p++)
404 if (*p == *DirectorySeparator)
409 MagickExport int AcquireUniqueFileResource(char *path)
411 #if !defined(O_NOFOLLOW)
414 #if !defined(TMP_MAX)
415 # define TMP_MAX 238328
429 portable_filename[65] =
430 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-";
438 assert(path != (char *) NULL);
439 (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s",path);
440 if (random_info == (RandomInfo *) NULL)
441 random_info=AcquireRandomInfo();
443 for (i=0; i < (ssize_t) TMP_MAX; i++)
446 Get temporary pathname.
448 (void) GetPathTemplate(path);
449 #if defined(MAGICKCORE_HAVE_MKSTEMP)
452 setmode(file,O_BINARY);
457 key=GetRandomKey(random_info,8);
458 p=path+strlen(path)-8;
459 datum=GetStringInfoDatum(key);
460 for (i=0; i < 8; i++)
462 c=(int) (datum[i] & 0x3f);
463 *p++=portable_filename[c];
465 key=DestroyStringInfo(key);
466 file=open(path,O_RDWR | O_CREAT | O_EXCL | O_BINARY | O_NOFOLLOW,S_MODE);
467 if ((file > 0) || (errno != EEXIST))
470 (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s",path);
473 if (resource_semaphore == (SemaphoreInfo *) NULL)
474 AcquireSemaphoreInfo(&resource_semaphore);
475 LockSemaphoreInfo(resource_semaphore);
476 if (temporary_resources == (SplayTreeInfo *) NULL)
477 temporary_resources=NewSplayTree(CompareSplayTreeString,
478 DestroyTemporaryResources,(void *(*)(void *)) NULL);
479 UnlockSemaphoreInfo(resource_semaphore);
480 (void) AddValueToSplayTree(temporary_resources,ConstantString(path),
481 (const void *) NULL);
486 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
490 % G e t M a g i c k R e s o u r c e %
494 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
496 % GetMagickResource() returns the specified resource.
498 % The format of the GetMagickResource() method is:
500 % MagickSizeType GetMagickResource(const ResourceType type)
502 % A description of each parameter follows:
504 % o type: the type of resource.
507 MagickExport MagickSizeType GetMagickResource(const ResourceType type)
513 LockSemaphoreInfo(resource_semaphore);
518 resource=(MagickSizeType) resource_info.area;
523 resource=(MagickSizeType) resource_info.memory;
528 resource=(MagickSizeType) resource_info.map;
533 resource=(MagickSizeType) resource_info.disk;
538 resource=(MagickSizeType) resource_info.file;
543 resource=(MagickSizeType) resource_info.thread;
548 resource=(MagickSizeType) resource_info.time;
554 UnlockSemaphoreInfo(resource_semaphore);
559 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
563 % G e t M a g i c k R e s o u r c e L i m i t %
567 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
569 % GetMagickResource() returns the specified resource limit.
571 % The format of the GetMagickResourceLimit() method is:
573 % MagickSizeType GetMagickResourceLimit(const ResourceType type)
575 % A description of each parameter follows:
577 % o type: the type of resource.
580 MagickExport MagickSizeType GetMagickResourceLimit(const ResourceType type)
586 if (resource_semaphore == (SemaphoreInfo *) NULL)
587 AcquireSemaphoreInfo(&resource_semaphore);
588 LockSemaphoreInfo(resource_semaphore);
593 resource=resource_info.area_limit;
598 resource=resource_info.memory_limit;
603 resource=resource_info.map_limit;
608 resource=resource_info.disk_limit;
613 resource=resource_info.file_limit;
618 resource=resource_info.thread_limit;
623 resource=resource_info.time_limit;
629 UnlockSemaphoreInfo(resource_semaphore);
634 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
638 % L i s t M a g i c k R e s o u r c e I n f o %
642 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
644 % ListMagickResourceInfo() lists the resource info to a file.
646 % The format of the ListMagickResourceInfo method is:
648 % MagickBooleanType ListMagickResourceInfo(FILE *file,
649 % ExceptionInfo *exception)
651 % A description of each parameter follows.
653 % o file: An pointer to a FILE.
655 % o exception: return any errors or warnings in this structure.
658 MagickExport MagickBooleanType ListMagickResourceInfo(FILE *file,
659 ExceptionInfo *magick_unused(exception))
662 area_limit[MaxTextExtent],
663 disk_limit[MaxTextExtent],
664 map_limit[MaxTextExtent],
665 memory_limit[MaxTextExtent],
666 time_limit[MaxTextExtent];
668 if (file == (const FILE *) NULL)
670 if (resource_semaphore == (SemaphoreInfo *) NULL)
671 AcquireSemaphoreInfo(&resource_semaphore);
672 LockSemaphoreInfo(resource_semaphore);
673 (void) FormatMagickSize(resource_info.area_limit,MagickFalse,area_limit);
674 (void) FormatMagickSize(resource_info.memory_limit,MagickTrue,memory_limit);
675 (void) FormatMagickSize(resource_info.map_limit,MagickTrue,map_limit);
676 (void) FormatMagickSize(resource_info.disk_limit,MagickFalse,disk_limit);
677 (void) CopyMagickString(time_limit,"unlimited",MaxTextExtent);
678 if (resource_info.time_limit != MagickResourceInfinity)
679 (void) FormatMagickString(time_limit,MaxTextExtent,"%.20g",(double)
680 resource_info.time_limit);
681 (void) fprintf(file,"File Area Memory Map"
682 " Disk Thread Time\n");
683 (void) fprintf(file,"--------------------------------------------------------"
684 "-----------------------\n");
685 (void) fprintf(file,"%4g %10sB %10sB %10sB %10sB %6g %11s\n",(double)
686 resource_info.file_limit,area_limit,memory_limit,map_limit,disk_limit,
687 (double) resource_info.thread_limit,time_limit);
689 UnlockSemaphoreInfo(resource_semaphore);
694 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
698 % R e l i n q u i s h M a g i c k R e s o u r c e %
702 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
704 % RelinquishMagickResource() relinquishes resources of the specified type.
706 % The format of the RelinquishMagickResource() method is:
708 % void RelinquishMagickResource(const ResourceType type,
709 % const MagickSizeType size)
711 % A description of each parameter follows:
713 % o type: the type of resource.
715 % o size: the size of the resource.
718 MagickExport void RelinquishMagickResource(const ResourceType type,
719 const MagickSizeType size)
722 resource_current[MaxTextExtent],
723 resource_limit[MaxTextExtent],
724 resource_request[MaxTextExtent];
726 (void) FormatMagickSize(size,MagickFalse,resource_request);
727 if (resource_semaphore == (SemaphoreInfo *) NULL)
728 AcquireSemaphoreInfo(&resource_semaphore);
729 LockSemaphoreInfo(resource_semaphore);
734 resource_info.area=(MagickOffsetType) size;
735 (void) FormatMagickSize((MagickSizeType) resource_info.area,MagickFalse,
737 (void) FormatMagickSize(resource_info.area_limit,MagickFalse,
743 resource_info.memory-=size;
744 (void) FormatMagickSize((MagickSizeType) resource_info.memory,
745 MagickTrue,resource_current);
746 (void) FormatMagickSize(resource_info.memory_limit,MagickTrue,
752 resource_info.map-=size;
753 (void) FormatMagickSize((MagickSizeType) resource_info.map,MagickTrue,
755 (void) FormatMagickSize(resource_info.map_limit,MagickTrue,
761 resource_info.disk-=size;
762 (void) FormatMagickSize((MagickSizeType) resource_info.disk,MagickFalse,
764 (void) FormatMagickSize(resource_info.disk_limit,MagickFalse,
770 resource_info.file-=size;
771 (void) FormatMagickSize((MagickSizeType) resource_info.file,MagickFalse,
773 (void) FormatMagickSize((MagickSizeType) resource_info.file_limit,
774 MagickFalse,resource_limit);
779 resource_info.thread-=size;
780 (void) FormatMagickSize((MagickSizeType) resource_info.thread,MagickFalse,
782 (void) FormatMagickSize((MagickSizeType) resource_info.thread_limit,
783 MagickFalse,resource_limit);
788 resource_info.time-=size;
789 (void) FormatMagickSize((MagickSizeType) resource_info.time,MagickFalse,
791 (void) FormatMagickSize((MagickSizeType) resource_info.time_limit,
792 MagickFalse,resource_limit);
798 UnlockSemaphoreInfo(resource_semaphore);
799 (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s: %sB/%sB/%sB",
800 MagickOptionToMnemonic(MagickResourceOptions,(ssize_t) type),
801 resource_request,resource_current,resource_limit);
805 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
809 % R e l i n q u i s h U n i q u e F i l e R e s o u r c e %
813 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
815 % RelinquishUniqueFileResource() relinquishes a unique file resource.
817 % The format of the RelinquishUniqueFileResource() method is:
819 % MagickBooleanType RelinquishUniqueFileResource(const char *path)
821 % A description of each parameter follows:
823 % o name: the name of the temporary resource.
826 MagickExport MagickBooleanType RelinquishUniqueFileResource(const char *path)
829 cache_path[MaxTextExtent];
831 assert(path != (const char *) NULL);
832 (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s",path);
833 if (temporary_resources != (SplayTreeInfo *) NULL)
838 ResetSplayTreeIterator(temporary_resources);
839 p=(char *) GetNextKeyInSplayTree(temporary_resources);
840 while (p != (char *) NULL)
842 if (LocaleCompare(p,path) == 0)
844 p=(char *) GetNextKeyInSplayTree(temporary_resources);
846 if (p != (char *) NULL)
847 (void) DeleteNodeFromSplayTree(temporary_resources,p);
849 (void) CopyMagickString(cache_path,path,MaxTextExtent);
850 AppendImageFormat("cache",cache_path);
851 (void) remove(cache_path);
852 return(remove(path) == 0 ? MagickTrue : MagickFalse);
856 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
860 + R e s o u r c e C o m p o n e n t G e n e s i s %
864 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
866 % ResourceComponentGenesis() instantiates the resource component.
868 % The format of the ResourceComponentGenesis method is:
870 % MagickBooleanType ResourceComponentGenesis(void)
874 static inline size_t MagickMax(const size_t x,
882 static inline MagickSizeType StringToSizeType(const char *string,
883 const double interval)
888 value=SiPrefixToDouble(string,interval);
889 if (value >= (double) MagickULLConstant(~0))
890 return(MagickULLConstant(~0));
891 return((MagickSizeType) value);
894 MagickExport MagickBooleanType ResourceComponentGenesis(void)
908 Set Magick resource limits.
910 AcquireSemaphoreInfo(&resource_semaphore);
911 pagesize=GetMagickPageSize();
913 #if defined(MAGICKCORE_HAVE_SYSCONF) && defined(_SC_PHYS_PAGES)
914 pages=(ssize_t) sysconf(_SC_PHYS_PAGES);
916 memory=(MagickSizeType) pages*pagesize;
917 if ((pagesize <= 0) || (pages <= 0))
918 memory=2048UL*1024UL*1024UL;
919 #if defined(PixelCacheThreshold)
920 memory=PixelCacheThreshold;
922 (void) SetMagickResourceLimit(AreaResource,2UL*memory);
923 (void) SetMagickResourceLimit(MemoryResource,3UL*memory/2UL);
924 (void) SetMagickResourceLimit(MapResource,4UL*memory);
925 limit=GetEnvironmentValue("MAGICK_AREA_LIMIT");
926 if (limit == (char *) NULL)
927 limit=GetPolicyValue("area");
928 if (limit != (char *) NULL)
930 (void) SetMagickResourceLimit(AreaResource,StringToSizeType(limit,100.0));
931 limit=DestroyString(limit);
933 limit=GetEnvironmentValue("MAGICK_MEMORY_LIMIT");
934 if (limit == (char *) NULL)
935 limit=GetPolicyValue("memory");
936 if (limit != (char *) NULL)
938 (void) SetMagickResourceLimit(MemoryResource,
939 StringToSizeType(limit,100.0));
940 limit=DestroyString(limit);
942 limit=GetEnvironmentValue("MAGICK_MAP_LIMIT");
943 if (limit == (char *) NULL)
944 limit=GetPolicyValue("map");
945 if (limit != (char *) NULL)
947 (void) SetMagickResourceLimit(MapResource,StringToSizeType(limit,100.0));
948 limit=DestroyString(limit);
950 limit=GetEnvironmentValue("MAGICK_DISK_LIMIT");
951 if (limit == (char *) NULL)
952 limit=GetPolicyValue("disk");
953 if (limit != (char *) NULL)
955 (void) SetMagickResourceLimit(DiskResource,StringToSizeType(limit,100.0));
956 limit=DestroyString(limit);
959 #if defined(MAGICKCORE_HAVE_SYSCONF) && defined(_SC_OPEN_MAX)
960 files=(ssize_t) sysconf(_SC_OPEN_MAX);
962 #if defined(MAGICKCORE_HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE)
968 if (getrlimit(RLIMIT_NOFILE,&resources) != -1)
969 files=(ssize_t) resources.rlim_cur;
972 #if defined(MAGICKCORE_HAVE_GETDTABLESIZE) && defined(MAGICKCORE_POSIX_SUPPORT)
974 files=(ssize_t) getdtablesize();
978 (void) SetMagickResourceLimit(FileResource,MagickMax((size_t)
980 limit=GetEnvironmentValue("MAGICK_FILE_LIMIT");
981 if (limit == (char *) NULL)
982 limit=GetPolicyValue("file");
983 if (limit != (char *) NULL)
985 (void) SetMagickResourceLimit(FileResource,StringToSizeType(limit,100.0));
986 limit=DestroyString(limit);
988 (void) SetMagickResourceLimit(ThreadResource,GetOpenMPMaximumThreads());
989 limit=GetEnvironmentValue("MAGICK_THREAD_LIMIT");
990 if (limit == (char *) NULL)
991 limit=GetPolicyValue("thread");
992 if (limit != (char *) NULL)
994 SetOpenMPMaximumThreads((int) StringToUnsignedLong(limit));
995 (void) SetMagickResourceLimit(ThreadResource,StringToSizeType(limit,
997 limit=DestroyString(limit);
999 limit=GetEnvironmentValue("MAGICK_TIME_LIMIT");
1000 if (limit == (char *) NULL)
1001 limit=GetPolicyValue("time");
1002 if (limit != (char *) NULL)
1004 (void) SetMagickResourceLimit(TimeResource,StringToSizeType(limit,100.0));
1005 limit=DestroyString(limit);
1011 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1015 + R e s o u r c e C o m p o n e n t T e r m i n u s %
1019 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1021 % ResourceComponentTerminus() destroys the resource component.
1023 % The format of the ResourceComponentTerminus() method is:
1025 % ResourceComponentTerminus(void)
1028 MagickExport void ResourceComponentTerminus(void)
1030 if (resource_semaphore == (SemaphoreInfo *) NULL)
1031 AcquireSemaphoreInfo(&resource_semaphore);
1032 LockSemaphoreInfo(resource_semaphore);
1033 if (temporary_resources != (SplayTreeInfo *) NULL)
1034 temporary_resources=DestroySplayTree(temporary_resources);
1035 if (random_info != (RandomInfo *) NULL)
1036 random_info=DestroyRandomInfo(random_info);
1037 UnlockSemaphoreInfo(resource_semaphore);
1038 DestroySemaphoreInfo(&resource_semaphore);
1042 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1046 % S e t M a g i c k R e s o u r c e L i m i t %
1050 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1052 % SetMagickResourceLimit() sets the limit for a particular resource.
1054 % The format of the SetMagickResourceLimit() method is:
1056 % MagickBooleanType SetMagickResourceLimit(const ResourceType type,
1057 % const MagickSizeType limit)
1059 % A description of each parameter follows:
1061 % o type: the type of resource.
1063 % o limit: the maximum limit for the resource.
1066 MagickExport MagickBooleanType SetMagickResourceLimit(const ResourceType type,
1067 const MagickSizeType limit)
1069 if (resource_semaphore == (SemaphoreInfo *) NULL)
1070 AcquireSemaphoreInfo(&resource_semaphore);
1071 LockSemaphoreInfo(resource_semaphore);
1076 resource_info.area_limit=limit;
1079 case MemoryResource:
1081 resource_info.memory_limit=limit;
1086 resource_info.map_limit=limit;
1091 resource_info.disk_limit=limit;
1096 resource_info.file_limit=limit;
1099 case ThreadResource:
1101 SetOpenMPMaximumThreads((int) limit);
1102 resource_info.thread_limit=GetOpenMPMaximumThreads();
1107 resource_info.time_limit=limit;
1113 UnlockSemaphoreInfo(resource_semaphore);